I've been travelling to or living in Bangkok for over 10 years. Ari is best neighbourhood to stay in. It is lively with great bars and restaurants but also has a residential neighbourhood feel. Central Bangkok is a 10 minute ride on the sky train away.
The apartment is in a great quiet location. It is very clean with hot water, filtered water, a washer, dryer and dish washer. The building has security and parking. Checking in and out was very easy.